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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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. As you know from Chapter 7, most metal carbonate salts are sparingly soluble in water. Below are listed several metal carbonates along with their solubility products, Ksp, For each salt, write the equation showing the ionization of the salt in water, and calculate the solubility of the salt in mol/L.

    Salt
    Ksp
    BaCO3 5.1 × 10 9
    CdCO3 5.2 × 10 12
    CaCO3 2.8 × 10 9
    CoCO3 1.5 × 10 13

Interpretation Introduction

(a)

Interpretation:

The ionization equation of the given sparingly soluble salt is to be stated and the solubility of the salt in mol/L is to be calculated.

Concept Introduction:

The solubility product is represented by Ksp. The solubility product describes the solubility of the solid substance in the solvent at the particular temperature. The high value of solubility product indicates that the substance will be more soluble in water, whereas the low value of solubility product is the indication of the low solubility of the solid in the solvent.

Explanation

The given sparingly soluble substance is BaCO3. On dissolution in water, salts dissociate to form metallic cations and hydroxide anions. The ionization reaction of BaCO3 is,

BaCO3(s)Ba2+(aq)+CO32(aq)

The solubility of the salt is assumed to be s mol/L.

According to the law of chemical equilibrium, the solubility product for BaCO3 is,

Ksp=[Ba2+][CO32]=s×s=s2

The salt, BaCO3 is not included in the equilibrium expression because it is a pure solid

Interpretation Introduction

(b)

Interpretation:

The ionization equation of the given sparingly soluble salt is to be stated and the solubility of the salt in mol/L is to be calculated.

Concept Introduction:

The solubility product is represented by Ksp. The solubility product describes the solubility of the solid substance in the solvent at the particular temperature. The high value of solubility product indicates that the substance will be more soluble in water, whereas the low value of solubility product is the indication of the low solubility of the solid in the solvent.

Interpretation Introduction

(c)

Interpretation:

The ionization equation of the given sparingly soluble salt is to be stated and the solubility of the salt in mol/L is to be calculated.

Concept Introduction:

The solubility product is represented by Ksp. The solubility product describes the solubility of the solid substance in the solvent at the particular temperature. The high value of solubility product indicates that the substance will be more soluble in water, whereas the low value of solubility product is the indication of the low solubility of the solid in the solvent.

Interpretation Introduction

(d)

Interpretation:

The ionization equation of the given sparingly soluble salt is to be stated and the solubility of the salt in mol/L is to be calculated.

Concept Introduction:

The solubility product is represented by Ksp. The solubility product describes the solubility of the solid substance in the solvent at the particular temperature. The high value of solubility product indicates that the substance will be more soluble in water, whereas the low value of solubility product is the indication of the low solubility of the solid in the solvent.

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